Wrench



n. T.'BROWN.

WRENCH.

, APPLICATION FILED JULY 20, 192:.

Patented June 20,1922.

-RAYMONDI' T. .Bnown, or LIMA, onro.

r tries.

WRENCH.

T 0 all whom it may concern:

Be it known that I, RAYMOND T. B OWN, a citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented certain new and. useful Improvements in Wrenches, of which the following is a specification.

This invention relates to wrenches and has for its object the provision of simple, inexpensive and efficient means whereby the movable jaw of a wrench may be quicklyand easily set at the proper, point upon the shank to engage a nut of any dimensions. A secondary object of the invention is to eliminate the adjusting screws and nuts which are now ordinarily employed to adjust the movable jaw, and a further object of the invention is to provide a construction in which the movable jaw may be removed entirely from the shank if such removal should be desirable for any purpose.

The invention is illustrated in the accompanying drawings, in which-- Figure 1 is a side elevation of a wrench embodying one form of my invention;

Fig. 2 is a View, partly in side elevation and partly in longitudinal section;

Fig. 3 is a transverse section on the line 3-3 of Fig. 2;

Fig. 4 is a detail holding dog.

In carrying out my invention, I employ a shank 1 which may be of the usual flatsided formation and has the fixed jaw 2 formed upon one end, the jaw being shown in the present instance as at an angle of about to the shank so that the wrench will. accommodate a hexagonal nut. It is to be understood, however, that the jaw may be at a right angle to the shank or otherwise disposed so that a nut of any design may be engaged. Tn that edge of the shank which merges into the fixed ja T provide a series of transverse teeth 3 which cooperate with a holding dog upon the movable jaw to hold the movable jaw in a set position. The movable jaw comprises a sleeve or tubular body 4 of proper form and dimensions to slidably fit upon the shank and from one side of this tubular body the jaw 5 extends at an angle to the sleeve or tubular body corresponding to the angle of the fixed jaw 2, as clearly shown. At the base of the jaw 5, a transverse opening or recess 6 is formed in the body 4 and the holding dog 7 is adapted to play in this recess, being provided with forperspective view of the Specification of Letters ltatent. Patgnted Jane 20, 1922.

1921. Serial No. 486,191.

or edge of the dog is provided with transverse teeth 10 adapted to engage the teeth 3 on the shank and interlock therewith so that the resistance of the nut to the jaw will be transmitted to the teeth and the jaw there-' by held in working engagement with the nut when the wrench is manipulated to turn the nut home or retract it in an obvious manner. Secured to the outer side of the dog 7 is a bracket or finger piece 11 and a coiled spring 12 is disposed between the said finger piece and the base of the jaw 5 and received within a socket 13 formed in said jaw, as clearly shown in Fig. 2. It is also to be noted that the surface of the movable jaw opposed to the forward end of the dog is tapered or made convex-concentric with the pivot 9, as shown at 14, to readily accommodate the swinging movement of the dog in the. manipulation of the tool.

When the wrench is to be used, the dog is released from the teeth 3 of the shank by slight pressure upon the thumb piece 11 and the movable jaw may then he slid easily longitudinally of the shank so that it will be 7 brought into engagement with the nut. When the nut is closely engaged by and between the jaws, the thumb piece is released and the spring 12 will then immediately expand and swing the dog into engagement withthe teeth on the shank so that the nut will be firmly held and turning movement applied. to the wrench will be transmitted directly to the nut. It will be readily noted that my wrench is very simple in the construction and arrangement of its parts and,

obviously, the movable jaw may be set to accommodate a nut of any given size in a very small fraction of time.

Having thus described the invention, what is claimed as new is: i

A wrench comprising a shank having a a holding dog pivotally attached to the movable jaw at the base of the same and in ad- Vance of the opening and playing in said opening and provided in one edge with transverse teeth to engage the teeth on the shank, the movable jaw having a socketin its rear side spaced outwardly from the pivot of the dog, a finger piece projecting laterally from the holding dog across the socket in the movable jaw; and a coiled spring bearing at one end against the front side of the finger piece and having its oppo 10 site end housed in the socket in the movable aw. V y In testimony whereof I afiix my signature.

RAYMOND T. BROWN. [n.s] 

